<!DOCTYPE html>
<html lang="zh">
	<head>
		<meta charset="UTF-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0">
		<meta http-equiv="X-UA-Compatible" content="ie=edge">
		<title></title>
		<style type="text/css">
			body{
				background-color: #152941;
			}
			.box1{
				width: 300px;
				height: 300px;
				background-color: #ff9719;
				border-radius:150px;
				position: absolute;
				top: 50%;
				left: 50%;
				transform: translate(-50%,-50%);
				box-shadow:0 0 40px 5px orange;
			}
		</style>
	</head>
	<body>
		<div class="box1"></div>
	</body>
</html>
